Folding-door structure



whicli UNITED STATES PATENT OFFICE.

HARRY W. PUGH, OF NEW YORK, N. Y., ASSIGN'OR TO WESTERN ELECTRICCOMPANY, INCORPORATED, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

FOLDING-DOOR STRUCTURE.

Application flied September 6, 1919.

To all whom it may concern:

Be it known that I, HARRY W. PUoH, a citizen of the United States,residing at New York, in the county of Bronx, State of New York, haveinvented certain new and useful Improvements in Folding- DoorStructures, of which the following is a full, clear, concise, and exactdescription.

This invention relates to door structures, and articularly to a type ofdoor structure is useful in telephone booths. More specifically, theinvention relates to a door structure of the folding type, and may beconsidered as an improvement on the structure described and claimed inthe copending application of George E. Mather, Serial No. 322,131, filedSeptember 6, 1919, and assigned to the same assignee as thisapplication.

In the accompanying drawing, the invention is illustrated as applied toa telephone booth. Figure 1 is a perspective view, part of the door beinbroken away to show certain features; F ig. 2 is a horizontal crosssectional view on a lane coinciding with the ceiling of the boot thedoor being open; and Fig. 3 is a horizontal cross-sectional view similarto Fig. 2, the door beingclosed.

Referring to the drawing, the booth is shown as having side walls 4 and5, floor 6, ceiling 7 and front wall 8 in which is the doorway equippedwith the door structure hereinafter described. The usual shelf for thetelephone is shownat 9 and a seat at 10.

The door proper comprises an inner door section 12, an outer doorsection 13 and an intermediate door section 14. The inner door sectionis hingedly supported on the front wall 8, which serves as a door frame,by hinges of any suitable kind one of which is shown at 16. Theintermediate door sec tion 14 has a width approximately equal to thecombined thicknesses of the inner and outer door sections 12 and 13; andthe intermediate door section is connected to the inner and outer doorsections by hinge mechanisms 17 and 18 which, in the particularembodiment shown, are of the so-called piano hinge type. The hinges 17and 18 are attached 9 inside faces of the door Specification of LettersPatent.

Patented Nov. 15, 1921.

Serial No. 322,153.

sections and all three of the door sections 12, 13 and 14 are beveledfrom their outside faces toward the hinge pintles, as clearly, shown inFigs. 2 and 3. These beveled surfaces are at an angle of 45 with theinside faces of the door sections, and this beveling permits the doorsection 13 to be folded into a position parallel with the door section12, as shown in Fig. 2.

The folding movement of the outer door section 13 is directed by aguiding means of any suitable kind, such as an upwardly extending pin 20secured to. the inside face of the door section 13 and extending into aslotted member 21 attached to the ceiling 7 of the booth.

In order to maintain the intermediate .door section substantiallyparallel to the doorway during the movement of the door, a gearedconnection, using this expression in the broadest sense, is providedbetween the inner and outer door sections. While this geared connectionmay take a variety of forms, the preferred form shown in the drawingcomprises intermeshing gears 23 and 24 formed in plates attached to thetop surfaces of the inner and outer door sections 12 and 13, as clearlyshown in Figs. 2 and 3. The centers of the gears 23 and 24 are locatedrespectively in line with the pintles of the hinges 17 and 18; and it isnecessary that the gear teeth extend over only about 90, as will beobvious from the drawing.

The folding door is closed and opened from the inside of the booth bymeans of a handle 26 attached to the inside face of the outer doorsection 14. By means of this handle the door may be moved from the openposition shown in Fig. 2 to the closed osition shown in Fig. 3, and viceversa.

uring the opening and closing movement of the door, the pin 20 travelsin the slot of the member 21; and the gears 23 and 24 7 outer doorsection, an intermediate door whereby the intermediate door section issection, hinge mechanisms connecting the maintained substantiallyparallel to the intermediate door section With the inner doorway duringthe movement of the door. 10 and outer door sections, guiding means forIn witness whereof, I hereunto subscribe directing the folding movementof the outer my name this 4th day of September A. 1).

door section, and intermeshing gears car- 1919. ried by the inner andouter door sections HARRY WV. PUGH.

